Reorganization of Business - Narrative (Details) $ in Millions	3 Months Ended
	Apr. 01, 2017 USD ($) employee	Apr. 02, 2016 USD ($)	Dec. 31, 2016 USD ($)
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	$ 19	$ 23
Restructuring, additional charges	19
Restructuring reserve	90		$ 101
Restructuring charges settled with cash	30
Restructuring, reversal of accruals no longer needed		4
Employee separation costs
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges		24
Restructuring, additional charges	15
Restructuring reserve	$ 80		94
Restructuring charges in the period for total employee severance (in number of employees) | employee	200
Restructuring charges settled with cash	$ 29
Number of employees expected to be paid (in number of employees) | employee	700
Exit costs
Restructuring Cost and Reserve [Line Items]
Restructuring, additional charges	$ 4
Restructuring reserve	10		$ 7
Restructuring charges settled with cash	1
Corporate aircraft | Asset Impairment Due to Reorganization
Restructuring Cost and Reserve [Line Items]
Restructuring, impairment of assets		3
Other charges
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	15	7
Costs of sales
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	$ 4	$ 16